Automatic musical instrument



y 1930- I L. 5. LOCKWOOD 1,769,184

AUTOMATIC MUSICAL INSTRUMENT F iled Feb. 17 92 3 Sheets-Sheet l.

1 xxx H July 1, 1930. s. LOCKWOOD 1,769,134

AUTOMATIC MUSICAL INSTRUMENT Filed Feb. 17 192 3 Sheets-Sheet 2 m mw w NJuly 1, 1930. L. s LOCKWOOD AUTOMATIC MUSICAL INSTRUMENT Filed Feb. 17192 3 Sheets-Sheet 3 IIII/II!I I, V/lllllii v IV H Guam-E0008! WU UUDDUU DDDDUBDDBOD H DWDU I Patented July 1, 1930 UNITED STATES:

PATENT OFFICE LOUIS S. LOCKWOOD, OF NORTH TONAWANDA, NEW YORK, ASSIGNORTO THE RUDOLPH WUBLITZEB MANUFACTURING COMPANY OF NORTH TONAWANDA, NEWYORK,

A CORPORATION OF NEW YORK AUTOMATIC MUSICAL INSTRUMENT This inventionrelates generally to automatic musical instruments but more particularlyto organs and similar instruments controlled by a music roll and trackerand having stops and other parts which must be actuated during theplaying of a composition.

Its chief object is to provide a novel tracker arrangement combined witha simple and reliable electro-pneumatic mechanism associated therewithfor controlling the drawing and cancelling of various stops and otherparts in the instrument.

Another object of the invention is to provide the tracker with stopcontrolling ducts arranged in vertical line with the usual note ductstogether with means for automatically cancelling or rendering a givennote duct inoperative whenever an alining stop duct is made operative bya registering stop perforation in the note sheet or for rendering agiven stop duct inoperative whenever an alining note duct is selected bya registering perforation in the note sheet.

Other obj ects and features of the invention reside in the constructionand arrangement of parts hereinafter described and more particularlypointed out in the appended claims.

In the accompanying drawings Figure 1 is a diagrammatic view of anautomatic musical instrument,such as an organ,

embodying my invention. Figure 2 is a sectional elevation showing theposition of the parts of the mechanism when a note perforation registerswith corresponding alining stop and note ducts in the tracker. Figure 3is a similar view showing the position of the parts of the mechanismwhen a stop perforation registers with corresponding alining stop andnote ducts in the tracker. Figure 4 is a fragmentary face view of thetracker.

Figure 5 is a sectional elevation of one of the 7 stop control motorsand associated parts. Figure 6 is a similar view of one of the master orpilot control motors. Figure 7 is a similar view of one of the retainingstop action units; Figure 8 is a sectional view of one of the rockerswitches for controlling a corresponding stop action.

Similar characters of reference indicate corresponding parts throughoutthe several views.

In its general organization, this invention consists of a tracker havinga row of note ducts, a row of stop control ducts paired with andarranged above and in vertical alinement with more or less of the noteducts, and a row of master ducts arranged beyond the zone of the noteand stop ducts and corresponding to the pedal, solo, accompaniment, etc.actions of the organ; a note sheet having corresponding perforations forregistering with said several ducts; a player stop action controlled bythe simultaneous uncovering of a master duct and a stop duct; aretaining stop action which operates in conjunction with the player stopaction for maintaining the automaticallyselected stops on and forcancel-' ling such selected stops when the next series or combination ofnote sheet perforations register with corresponding tracker-ducts tobring on different stops or possibly the repetition of previous stopswith new ones, as called for by the composition being played; and an onand off mechanism for automatically effecting the cancelling or cuttingoff of that note duct in the tracker in line or paired with thecorresponding stop duct being selected, and for similarly cutting offsuch stop duct when the companion alining note duct is to be played. I

Referring now to the drawings, 10 indicates a tracker of any suitableconstruction having the customary note ducts or holes 11, and-12 thenote sheet. The manual keys are indicated at 13, each key being adapted,when depressed, as by the registration of a note sheet perforation witha corresponding note pneumatics which carries a metallic bar 21 adaptedto bridge a pair of contacts 22, one of which is connected by a wire 23with the feed wire 16, while the other leads to corresponding terminals2* on the usual rocker switches 25 which govern the various stops in theorgan. These rocker switches are controlled by the corresponding stopaction electromagnets 26 included in the retaining stop action circuithereinafter described. V-Fhen the circuit including one of saidelectromagnets 26 is closed, it operates a pneumatic 27 in thewell-known manner to shift the respective rocker switch to on position,its terminal making contact with the usual contact strips 28 which areconnected by wires 29 to the electromagnets 30 in the pipe chests, thusbringing the corresponding stop of pipes on ready for playing when themusic perforations in the note sheet register with the tracker duets.

In addition to the note ducts 11, which are indirectly connected to theusual corresponding electro-pneumatic actions 11 of the relay circuit,the tracker is provided with a plurality of master ducts or holes 31preferably located at one end of the tracker beyond the zone of the noteducts, and a plurality of stop ducts or holes 32 located insubstantially horizontal alinement with said master ducts and above andin vertical line with more or less of the note duets 11. The masterlucts and cooperating stop ducts function, through the medium of theplayer stop action and the retainin stop action above referred to, whenuncovered by corresponding perforations 33 and 3t, respectively, in thenote sheets, to control the various instrumentalities in t. e organ. Themaster ducts correspond in number to the various sections of the organ,such as the pedal, accompaniment, solo, etc, while the stop ductscorrespond in number to those of the stops in the organ sections.

The player stop action is preferably constructed as follows 35, 35indicate two motor pneumatics which actuate or control the organ stopsor other parts to be operated, and 36, 36 two master pneumatics whichcontrol the action of said stop pneumatics. lVhile two of such stop andmaster pneumatics are shown in the drawings, it is to be understood thata sufficient number are employed in practice according to the number ofstops and other parts to be actuated. Each of the stop pneumatics iscontrolled by any suitable or well known pneumatic valve unit, thatshown in the drawings comprising the customary valve chamber 37connected by a port 38 with the atmosphere and by a port 39 with theexhaust chamber 20; a duplex valve 41 controlling said ports; a passage42 connecting the interior of said pneumatic with the valvechamber; anda diaphragm 43 controlling the duplex valve and a conduit 44 leadingfrom the chamber beneath the diaphragm to the companion stop duct 32.Interposed in the conduit 44 is a pouch block or chamber 45 containing apouch valve 46 which normally extends over and closes the communicatingends 47 of the conduit and which is adapted to be raised to establishsuch communication, as shown by dotted lines in Figure 5, whenever thecorresponding stop in the organ is automatically selected.

Each of the master pneumatics 36 is controlled by a similar pneumaticvalve unit indicated generally by the numeral 48 and connected by aconduit at) with the companion master duct 31 in the tracker. Both themaster and stop pneumatics are normally iiifiated and are deflate-d whenthe perforations 33, 34 in the note sheet register with thecorresponding tracker-ducts 31, 32. \Vhen thus deflated, thesepneumatics act to establish electric circuits, the master pneumatic 36controlling the opening and closing of the stop pneumatic circuits whichin turn are connected to the circuits of the retaining stop action. Forthis purpose, each master pneumatic carries a contact yoke 50, which, inthe collapsed position of such pneumatic, bridges a plurality of contactwires 51, 52, while each SLCJP pneumatic carries a contact yoke or yokesadapted to bridge contact wires 54, when such pneumatic is collapsed.The contact wire 51 is connected by a wire 51" with the generator feedwire 16 while the companion contact wires 52 are connected to thecontact wires 54 of the corresponding stop pneumatic by conductors 56,the contact wires being joined to conductors 57 leading to the circuitof the retaining stop action presently to be described.

This retaining stop action preferably consists of a wind chest 56 whichcontains as many pneumatics 59 as there are stops or other parts in theorgan to be actuated. Each of such pneumatics is in communication withthe wind chest through a pasage 60 controlled by an electropneumaticvalve 61, so that when the magnet 62 thereof is energized, thecorresponding pneumatic is collapsed. The conductor 5? leading from acorresponding contact wire of one of the stop pneumatics 35 is connectedto one of the poles of the companion electron net 62, the other polebeing connected by a i e 33 to the generator return wire 19. Thus,whenever a stop pneumatic 35 is caused to collapse simultaneously with acompanion master pneumatic 36, the circuit including the correspondingmagnet 62 is closed and the pneumatic 59 controlled thereby is deflated.he latter carries a contact l yoke 64 adapted to bridge three contacts65, 66 and 67 in the collapsed condition of its pneumatic. The contactis connected by a wire 68 with the generator feed wire 16, the contactwire 66 is connected by a wire 69 to the corresponding stop actionelectromagnet 26, and thecontact 67 is connected by a wire 70 to a.switch indicated generally at 71 and functioning to normally completethe circuit of the magnet 62 to retain the corresponding stop in theorgan in its on position and to momentarily break such circuit to cancelor discontinue such stop while bringing on others or even repeating thisstop as determined by the composition bein played.

The switch 71 is preferably 0 the ordinary rocker type, similar to thatshown at 25 for governing the stops in the organ, and in cludes arocking switch-head 72 carrying a plurality of contacts 73 adaptedtoengage companion contact strips 74. Each of the latter is connected bythe Wire 70 to the contact 67 of the corresponding retaining stop actionpneumatic 59, while the companion switch contact 73 is connected by aWire 75 to the wire 57 leading to the magnet 62 controlling saidpneumatic. This switch is normally closed to maintain the circuitthrough the magnet 62 and thus retain the selected stops in the organ onafter the perforations-33, 34 in'the note sheet have passed thecorresponding tracker ducts 31, 32, a spring,

76 applied to the actuating arm 77 of the switch-head serving to holdthe latter in its raised position with its contacts 73 engaged with thestrips 74. The momentary breaking of the circuit at the switch 71 tocancel a stop that has been on is automatically effected during thecollapse of the master pneumatic 36 by thefollowing mechanism 78indicates a wind chest containing an electromagnet 79 which operates adisk valve 80 that supplies air from the chest thrbugh a passage 81 to apneumatic 82, which in turn actuates a duplex valve 83 controlling thesupply of air from the wind chest through a passage 84 leading to apneumatic 85 connected by a link 86 with the arm 77 of the rockswitch-head 72. The energizing of the electromagnet 79. results in theinflation of the pneumatic 85 which acts to rock the switch-head to itsoff position. Each master pneumatic 36, in addition to carrying thecontact yoke 50 for bridging the contacts 51, 52, also carries ayieldablecontact arm 87 on its movable board, which, during the collapseof such pneumatic, is adapted to mementarily engage a hook-shapedcontact 88 applied to the opposing movable board of a retarder bellows89. The master pneumatic is normally inflated by a spring 90, while theretarder bellows is held in a deflated position by said master pneumaticthrough the medium of the contact arm 87 bearing against it, as shown inFigure 6. The retarder bellows also has a spring 91 applied thereto forexpanding it as the master pneumatic is deflated, but this spring isweaker thanthe spring of said master pneumatic so as not to resist itsinflation. The bellows has a bleed hole 92 for regulating the retardingaction thereof. The contacts 87 88 constitute the elements of a switchand are included in the circuit of the electromagnet 79 controlling theswitch 71, the contact arm 87 being connected by a wire 93 to one poleof said magnet and the companion contact 88 being connected by a wire 94to the generator feed wire 16, while the other magnet pole is connectedby a wire 95 to the generator return wire 19.

By this arrangement, when the master pneumatic is collapsed, its contactarm 87 engages the hook shaped contact 88, as shown in Figure 3, therebyclosing the circuit including the electromagnet 79 and opening theswitch 71. Immediately after this action has taken place, and while saidcontacts 87, 88 are closed, the contact yoke 50 of the master pneumaticengages the contacts 51, 52 and thereby closes the circuit including theelectromagnet 62 of the retaining stop action. By reason of the retardedexpandingmove ment of the bellows 89, it is not fully expanded when themaster pneumatic is fully collapsed, but its spring 91 continues to urgeit to such position and during this period the contacts 87, 88 arebroken or separated while the contacts 50, 51, 52 are still closed, withthe result that the, magnet 79 is deenergized and the switch 71controlled by it is returned to its normally closed position. Hence,when a stop pneurna io 35 is collapsed simultane+ ously with that of acompanion master pneumatic, as in the case in the automatic selection ofa certain stop or stops in the organ, the closing of the contacts 50,51, 52 completes the circuit through the Contact yoke 53 and contacts54, 55 and electromagnet 62 of the retaining stop action, therebycollapsing the corresponding pneumatic 58 of the latter and closing thecircuit across its contacts 65. 66, 67 to bring the desired stops on.The circuit thus established to effect this result includes the feedwire 16, wire 68, contact 65, I contact yoke 64, contact 66and thenceover wire 69 to the electromagnet 26 of the stop action. g

It will therefore be understood, that for a brief period, thecircuitincluding the electromagnet 62 of the retaining stop action will beclosed at two points, viz., through the switch 71 and the contacts ofthe master pneumatic 36 and the respective stop pneumatic 35. Themoment, however, these companion pneumatics are inflated to their normalposition, by reason of the note sheet perforations 33, 34 having passedthe corresponding tracker ducts 31, 32, the circuit is broken at thecontacts 50, 51, 52 and also at the contacts 53, 54, 55, but it is stillretained at the switch 71 by reason of the circuit controlling it havingbeen closed prior to the breaking of the circuit at the contacts justmentioned. The circuit thus retained for keeping the selected stop, onfor the ref quired period called for by the composition being played,includes the feed wire 16, wire 68, contact 65, contact yoke 64, contact67, wire 70, contact strip 74 and contact 7 3 (switch 71), wire 75electromagnet 62 and thence by the wire 63 to the generator return wire19.

Upon the inflation of the master pneumatic 36 to its normal position,its contact arm 87 immediately returns to the movable board of thebellows 89, thus collapsing the latter with said contact arm remainingclear or the hook-she ed contact 88.

Inasmuch as the stop ducts 32 are in the path of travel of the musicperforations in the note sheet and the note ducts 11 are likewise in thepath of travel of the stop perforations 3% in the note sheet, means mustnecessarily be provided for effecting the canceling or cutting oil ofthat note duct in the tracker in vertical alinement with thecorresponding stop being selected and iior similarly cutting oil suchstop duct when the companion alining note duct is to be play 11. Forthis purpose an automatically controlled on and oil mechanism isemployed which is preferably constructed as follows Connected to each ofthe note ducts 11 in the tracker is conduit 96 which leads to a pouchblock or chamber 97 containing a pouch valve 98 for controlling thepassage of m said conduit to a second conduit 99 ng to the duplex valveunit 100 of the "esponding relay or note-controlling pneumatic 11, suchvalve unit being identi cal in construction to those of the penumatics35 and 36. Normally, the pouch valve 98 is raised, as shown in Figure 2,to establish unication between the conduits 96 and 99, so that when anote perforation in the music sheet registers with a note duct 11,

atmosphere will llow through said conduits r erate the duplex valve orthe note-cont olliu pneumatic to collapse the same and 1'7 close itscontacts 101, 102wh1ch are included in the circuit of the electro-magnet18 of the relay act-ion.

1c valve unit i8, which is conconduii; l9 with one of the l l forcontrolling the corresponding" i a icumatic 36, also governs theactuatict i c pouch valves and 98 to ellcct firstly, the collapse of agiven stop pneumatic whenever a corresponding stop duct 32 is uncoveredsimultaneously with that of a master duct, and secondly, to cut oil thealiuing note duct- 11 and prevent its corresponding note peaking, thatis, to impair the actuation oi the relay pneumatic 11 controlling thecircuit of the corresponding pipe action. To this end, a master controlelement preferably consisting of a pouch unit 103 is pr vided whichcontains as many pouch chambers 10% and valves 105 as there are mastertracker ducts 33, each chamber being in. ducts connected by a conduit106 with a branch passage 107 leading to the passage 108 connecting thecorresponding master pneumatic 36 with its duplex valve unit 4.8, sothat whenever the companion master duct is uncovered to collapse saidpneumatic, a part of the suction employed for collapsing it acts on therespective pouch valve to open or raise it, as shown in Figure 3. Eachpouch valve 105 bridges a pair of ports 101), 11.0, the former openinginto the {lUUUT-IPllcIG and the latter into a manifold passage 111 inthe pouch unit which is connected by a conduit 112 with a controllingvalve indicated generally by the numeral 113 and lunction n through themedium of the pouch valve to govern the selection or a given stop in theorgan. This controlling valve is preferably ol the type shown inconnection with the pneumatics 35, 2513. the numeral 111 indicat g itsexhaust chamber and 115 the duplex valve actuated the diaphragm 116, theconduit 112 leadto the usual chamber beneath the diar gm. The ports 11?,118 which communih the atmosl'iherc and exhaust chamicctivel areconnected by a passage conduit 120 with the pouch chamber Joined to thisconduit is a branch cona. "it 121 which leads to the actuating diaphragmof a second controlling valve consistoi a pneumatic valve unit 122identical The passage 119 of this valve unit by a conduit with the pouch.ltlllllJQl 97. This second controlling valve 2 which governs the pouchvalve 08, is in urn governed by the controlling valve 113 of he pouchvalve 10 so that when a master duct and a stop duct are simultaneouslyuncovered, these parts act to not only throw the corresponding organstop on by actuating its stop pneumatic but to cutoli or render inactivethe playing pneumatic 11"- associated with that note duct in the trackerin line with such stop duct.

Normally, when the master ducts and stop ducts are covered by the notesheet, as shown in Figure 2, the pneumatic valve 18 of the masterpneumatic 36 allows atmosphere to enter the passage 108 to inflate thelatter and also to enter he conduit 106 for holeing the correspondingvalve 105 oi? no master control pouch 103 in its closed position. Thispermits the duplex valve 115 of the controlling valve 113 to remain inits lowered position and allow atmosphere to enter the passage 119 andconduits 120, 121, whereby the pouch valve l6 is cold closed to renderthe stop action inoperative and the duplex valve 115 of the controllingvalve 122 is raised to open the passage 110 to the suction chan'iber 11%and thereby open the valve 98 of the pouch block 97, so that when a noteduct is uncovered the atmosphere is free to pass uninterruptedly closedvto the atmosphere, allowing suction to collapse it and likewise openthe corresponding pouch valve 105 of the master control pouch.Atmosphere is then admitted to the i conduit 112 through the ports 109,110, lifting the duplex valve 115 of the controlling valve 113 andopening the passage 119 and conduits 120, 121 to suction, therebylowering the duplex valve of the controlling valve 122 to open it to theatmosphere and close the pouch valve 98 to render the relay pneumatic 11inoperative and simultaneously opening the pouch valve 46 to allow theatmosphere to flow through the sectional conduit 44 and actuate thecorresponding stop pneumatic 35 to effect the drawing of the stop. Itwill thus be seen that the uncovering of a master duct serves to notonly connect the stop ducts with their companion stop pneumatics butalso to disconnect the .alining playing ducts from their companionplaying pneumatics 11.

The leading ends of the master and stop perforations 33, 34,respectively, are disposed in horizontal alinement in the note sheet sothat the corresponding master and stop ducts are simultaneouslyuncovered. However, it is necessary, in the selection of a given stop,that the master duct 31 remain uncovered during the period that thecorresponding pair of alining stop and note ducts are uncovered for thereason that the uncovering of a master duct renders the playing duct, inline with the stop duct being selected, dead, or inoperative, and itmust remain dead until the stop perforation in the note sheet clearssuch playing duct.- To this end the master perforation 33 is preferablymade long enough to remain in register with its master duct until shestop perforation 34 clears its alining note not.

It is of course understood that those note ducts 11 in the tracker notpaired with stop ducts 32 operate as usual. It is also evident from theforegoing that those note ducts paired with the stop ducts are alwaysready for use and areonly cut off when an alining stop duct is uncoveredas called for .by the composition being played. The tracker illustratedin Figure 4 of the drawings has one hundred and five note ducts 11,three master ducts 31 and fourteen stop ducts 32, the latter, bypreference, being disposed near the bass or left hand end of thetracker.

Briefly stated, the operation of the mech-. anism is as follows When theinstrument is at rest, the stop pneumatics 35, the master Pneumatics 36,

the. relay neumatics 11", and the pneumatics 59 of the retaining stopaction are in their inflated, circuit-breaking positions; the

rocker switch 71 including the elements 73, 74 is closed.

Now assume-a music roll to be placed in position and the instrumentstarted. WVhen a master perforation 33 and a stop perforation 34simultaneously register with companion ducts 31, 32 in the tracker, thecorresponding master pneumatic 36 and stop pneumatic 35 are collapsed inthe manner heretofore described. The collapse of the master pneumaticprepares the way for the operation of the other parts of the mechanism,particularly the companion stop pneumatic or pneumatics and the on andoff mechanism and functions, first, to momentarily open the switch 71and throw off any stops in the organ which might have been on. However,in this instance, the instrument has just been started and thereforethere are no stops on and the switch is simply snapped off and onwithout affecting any parts which it controls. Simultaneously with thisaction, the companion valve 105 of the master control pouch is openedwhich results in the closing of the duplex valve 115 of the controllingvalve 113 to the atmosphere, thereby closing the pouch valve 98 torender the corresponding relay pneumatic 11 inoperative and opening thepouch valve 46 to effect the collapse of the stop pneumaticsimultaneously with that of its companion master pneumatic, as shown inFigure 3. The collapse of these pneumatics closes the contacts 51, 52and 54, 55, establishing the circuit which energizes the electromagnet62 of the retaining stop action and collapsing the correspondingpneumatic 59 so that its contact yoke closes or bridges the contacts 65,66, 67. The circuit thus completed by the simultaneous collapse of themaster pneumatic and its companion stop pneumatic includes the feed wire16, contact 51, contact yoke 50, contact 52, conductor 56-, contact 54,contact yoke 53, contact 55, wire 57, electromagnet 62 and thence bywire 63 to the generator return wire19. The collapse of thecorresponding retaining stop pneumatic 59 brings on the desired stop inthe organ in the manner heretofore described. After the perforations 33,34 have passed the tracker openings 31, 32, both the master pneumaticand the companion stop pneumatic are inflated, their elec tric contactsare broken and the controlling valves 113, 122 and their companion pouchvalves 46, 98 return to their normal position, but the retainingpneumatic remains collapsed and the corresponding stop is maintained ondue to the fact that the controlling magnet 62 of such retainingpneumatic is still energized through the circu1t including the switch71, which was previously opened and closed during the collapse of themaster pneumatic as heretofore explained.

lt'hen the next set of master and stop perforations in the note sheetuncover corresponding ducts the tracker, the switch '71 is moment rilyopened with the result that the retain A stop action pneumatic 59, whichhas been on inflated; its contacts 65, 6G, 67 are brolren and the stopit controls is cancelled or moved to off position. The stop or stopsnext to be selected are then automatically rawn in the manner abovedescribed.

I claim as in invention Q 1. An automatic musical instrument, comprisinga tracker having a row of note-play i1 .1 opening nd a stop-controllingopening paired with of certain note-playing openings, and mea s forrendering the note-playing opening inactive when its paired stop-;rolling opening is rendered active.

2. An automatic musical instrument, co1nrising a tracker having a row ofnote-play- 1 openin. a stop-controlling opening 3 J 'ed with y ofcertain note-playing openif master opening. and means cont t masteropening for renderying open ng inactive when stop-controlling opening 1srenree. a t e.

u. no. ...o.aauc musical instrument, comprising a tracker having a rowof note-playing on 1 .ud a row of stop-controlling openings z. a1 gcdabove and in vertical alinemen with certain. of said note-playingopenings. and means for automatically cancelling the note-playingopening when its comp iion mg stop-controlling opening active.

automatic musical instrument. comprising a tracker having a row ofnote-playopenings an d a stopcontrolling opening ed with of certainnotcplaying openinns. a note sl having music perforations V Irectadapted to register with the note-playing opening and a stopperforation adapted. to register with said stop-controlling opening andits companion noteplaying opening, said note-i g openings being normallyoperative to. playing when uncovered. by corresponding perforations inthe note sheet. and means controlled by the note sheet for renderingthe. note-playing opening inactive when i s paired stop-controllingopening is rendered active.

An automatic musical instrument, comprising a tracker having a row ofnote-playing o nings. a stop-controlling opening paired ith an ofcertain note-playing openings and. a master opening, a note sheet havinm sforatic-ns corresponding to the several clfer openings saidnote-playing openings being normally operative for playing when uncovered by the note sheet perforations. and means controlle by thesimultaneous uncovering of the master opening and the stop-controllingopening for rendering the latter active and its paired note-playingopening inactive.

6. An automatic musical instrument, comprising a tracker having a row ofnote-playin g openings and a stop-controlling opening paired with any ofcertain note-playing openings. a normally active playing actionconnected with said note-playing openings, a normally inactive stopaction connected with said stop-controlling openings, at note sheethaving music perforations adapted to register with the note-playingopenings and a stop perforation adapted to register with thestopcontrolling opening and its companion noteplaying opening. and meanscontrolled by the note sheet and connected with the playing action andthe stop action for rendering the former inactive and the latter activewhen corresponding pair of note-playing and stopcontrolling openings areuncovered by said stop perforation.

'7. An automatic musical instrument, comprising a tracker having a rowof note-playing openings. a stop-controlling opening and a masteropening, the stop-controlling opening being paired with any of certainnoteplaying openings, a player stop action controlled by thesimultaneous uncovering of the master opening and thestop-controllingopening, and means governed by said player stop action.for cancelling the note-playing opening when its companionstop-controlling opening is rendered active.

8. An automatic musical instrument, comprising a tracker having a row ofnote-playing openings, a stop-controlling opening and a master opening.the stop-controlling opening being paired with any of certainnoteplaying openings, a playing action normally operatively connectedwith said note playing openings. a player stop action operativelyconnected to the master opening and the stopcontrolling opening. saidplayer stop action being normally inactive and rendered active by thesimultaneous uncovering of said master opening and said stop-controllingopening. and a controlling device governed by said pl :1 er stop actionfor rendering the playing action of that note-opening paired with thestop-controlling opening inactive when the latter is rendered actice.

9. An automatic musical instrument. comprising a tracker having a row ofnote-playing openings and a plurality of stop-controlling openingspaired with certain of said note-playing openings. a note sheet havingcorresponding note and stop perforations. a playing action normallyoperatively connect ed with said note-playing openings, a. stop actionconnected with said stop-controlling openings. and master controllingmeans for rendering the stop action operative and the playing actioninoperative when a stop-controlling opening and a note-playing openingof a pair are uncovered by a stop perforation in the note sheet.

10. An automatic musical instrument, comprising a tracker having a rowof note-playing openings and a plurality of stop-controlling openingspaired with certain of said note-playing openings, a note sheet havingcorresponding note and stop perforations, a playing action normallyoperatively connected with said note-playing openings, a stop actionconnected with said stop-controlling openings, and means including amaster opening in the tracker governed by the note sheet and.operatively connected with the stop action for rendering the playingaction of a given note-playing opening inactive and the stop action ofits companion or paired stopcontrolling openings active.

11. An automatic musical instrument, comprising a tracker having a rowof note-playing openings, a stop-controlling opening paired with any oneof the latter and a master opening, a playing action normallyoperatively connected with said note-playing openings, a stopactionconnected with said stopcontrolling opening, and means governed bysaid master opening together with said stopcontrolling opening forrendering the stop action operative and the playing action of thecompanion note-playing opening inoperative.

12. An automatic musical instrument, comprising a tracker having a rowof note-playing openings, a stop-controlling opening paired with any oneof the latter and a master opening, a playing action normallyoperatively connected with said note-playing openings, a stop actionincluding an element operatively connected to said stop-controllingopening and an element connected to said i'i'iaster-opcning, and meanscontrolled by the simultaneous actuation of said stop action elementsfor rendering the corresponding stopcontrolling opening and itsassociated stop action operative and the companion noteopening and itsplaying action inoperative.

13. An automatic musical instrument,

comprising a tracker having a row of note-.

playing openings and a stop-controlling opening paired with any one ofsaid noteplaying openings, a'normally active playing action connectedwith said note-playing openings, a normally inactive stop actionconnected with said stop-controlling opening, a note sheet having musicperforations adapted to register with the note-playing openings and astop perforation adapted -to register with the stop-controlling openingand its companion note playing opening,

means controlled by the note sheet and connected with the playing actionand the stop action for rendering the former inactive and the latteractive when the corresponding pair of note-playing and stop-controllingopenings are uncovered by said stop perforation,

and a retaining stop action for maintaining such selected. stop actionon after said stopcontrolling opening is covered.

14. An automatic musical instrument, comprising a tracker having a rowof noteplaying openings, a stop-controlling opening paired with any ofsaid note-playing openings and a master opening, a playing actionnormally operatively connected with said note-playing openings, a stopaction including a pneumatic connected with said stop-controllingopening, a master pneumatic connected with said master opening, andpneumatic controlling means operatively connected to said playing actionand to said stop action pneumatic and governed by said master pneumaticfor rendering the stop action active and the playing action of itscompanion note-playing opening inactive.

15. An automatic musical instrument, comprising a tracker having a rowof note-playing openings, a stop controlling opening paired with any oneof said note-playing openings and a master opening, a playing actionconnected with said note-playing openings, a stop action connected withsaid stopcontrolling opening, master controlmeans connected with saidmaster opening, a valve for normally maintaining the note-playingopenings in communication with the playing action, a valve for normallymaintaining the stop-controlling opening in non-communication with itsstop action, and means assooiated with said master control means forgoverning said valves to render the playing action of a givennote-opening inoperative and the stop action of the companion stopcontrolling opening operative.

16. An automatic musical instrument, comprising a tracker having a rowof note playing openings, a stop-controlling opening paired with any oneof said note-playing openings and a master opening, a playing actionconnected with said note-playing openings, a stop action connected withsaid stopcontrolling opening, master control means connected with saidmaster opening, pneumatic valves associated with said playing action andsaid. stop action, and a pneumatic device connected with said mastercontrol means for governing said valves, said device being normallypositioned to render the playing action active and the stop actioninactive and to render the latter active and the former inactive whensaid master opening and said stop opening are simultaneously selected. I

17. An automatic musical instrument, comprising a tracker having a rowof note playing openings, a stop-controlling opening paired with and oneof said note-playing openings and a master opening, a playing actionconnected with said note-playing openings, a stop action connected withsaid stopcontrolling opening, master control means connected wi h saidmaster opening, pouch valves for governii the actuation of the and thestop action, respeccorr ponding tracker i s governed to render the stopaction pla -ring action ct .he companinactive. ;ical instrument, comin;a row of noteplaystop-controlling opening one of said note playing 5G1opening, a playing aci said note-playing openprising' a it. ing open'paired w openings a tion mime i action connected with said stopcontrellopei master control means connected ith master opening, pouch .valvesfor governing the actuation of the playing action and the stop action,respectively, when their wrresponding tracker openings are uncovered, acontrolling valve associated with each oi sa d pouch valves forcontrolling them, and me ns g vcrned by said master control means foractuating "aid pouch-controlling valves to render the stop action activeand the playing action of the companion noteplaying opening inactive.

19. in automatic musical instrument, comprising a tracker having a rowof noteplaying openings, a stop-controlling opening paireu with any oneof said note-playing openings and a master opening, a playing actionconnected with said note-playing openings, a stop action connected withsaid stopcontrolling opening. master control means connected ith saidmaster opening, and operatively connected devices governed by saidmaster means for controlling the actuation of said playing action andsaid stop action. respectiv 20. An automatic musical instrument,comprising a tracker having a row of note-playing openings, astop-controlling opening with any one of said note-playing a masteropening, a playing acion connected with id note playing open- .ctioaconnected with said stopcontrolling o master control means connected n1.7 id master opening. and operatively connected devices governed by saidmaster means for controlling the actuation of said playing action andsaid stop action, respec ly the stop action controlling de ice governingthe playing action controlling device, whereby aid playing action isnormally rende ed ac ve but rendered inactive when the companionstop-controlling opening is uncovered to effectthe actuation of saidstop action.

21. An automatic musical instrument, comprising tracker having a row ofnote-playi rr openings, a stop-controlling opening paired with any oneof said note-playing openings and a master opening, aplaying actionconnected with said note-playing openings, a stop action connected withsaid stopcontrolling opening master control means connected with saidmaster opening, a stop action controlling valve governed by said mastermeans, and a playing action controlling valve governed by said stopaction controlling valve, the stop action valve in its non-selectiveposition rendering the playing action valve operative and in itsselective position rendering the playing action valve inoperative.

22. A tracker bar for automatic musical instruments, having a row ofnote openings, and a supplementary controlling opening paired with anyone of said note openings.

23. A tracker bar for automatic musical instruments, having a row ofnote openings, a row of supplementary controlling openings arranged invertical line with and paired with certain of said note openings.

24. A tracker bar for automatic musical instruments, having a row ofnote openings, a supplementary controlling opening paired with any oneof said note openings, and a master opening arranged transversely inline with said controlling opening.

25. A tracker bar for automatic musical instruments, having a row ofnote openings, a row of supplementary controlling openings paired withand disposed above and in vertical line with certain of said noteopenings, and a master opening arranged transversely in line with thecontrolling openings and beyond the zone of the note openin 26. In anautomatic musical instrument, a tracker having a row of note openings, arow of controlling openings arranged in vertical line with and pairedwith certain of said note openings and a master opening arrangedtransversely in line with said controlling openings, and a note sheethaving note perforations, controlling perforations adapted to registerwith said controlling openings and their alining note openings, and amaster per foration adapted to register with said master opening, saidmaster perforation being of a length to remain in register with itscorresponding tracker opening during the simultaneous registration ofone or more of the controlling openings with its companion pair ofcontrolling and stop perforations.

27. A note sheet for automatic musical instruments. having in additionto the usual note sounding perforations, one or more stop perforationsin vertical line with certain of said note perforations, and a masterperforation.

